I have a circuit that has worked in the past. I just reworked it and now the mosfet is overheating. Prior to the rework I had intermittent overheating but now it blows the mosfet all the time.
I've attached a schematic. Basically I have a microchip that senses an input and if the mosfet should be on it causes a pin to go high. The high signal is sent to the gate of the mosfet, buffered with a 330 ohm resistor. There is a 2.2K pulldown resistor gate to ground. The input power is 1.3A at 9Volts.
The load is a heating element, nichrome wire. I have the V+ from the power supply going directly to the nichrome and then the other end of the nichrome goes to drain of the mosfet.
The mosfet is IRFL014 from vishay, this is suppose to have max ratings of 60V and 2.7 A.
The voltage regulator is 5V 1.5A.
Resistors are 1/8 watt
Seems the mosfet should handle the load but since I am just a tinkerer without EE training I'm not sure where I went wrong. Any help would be greatly appreciated.
The original schematic had S / D reversed I just moved the labels to "fix it"
I've attached a schematic. Basically I have a microchip that senses an input and if the mosfet should be on it causes a pin to go high. The high signal is sent to the gate of the mosfet, buffered with a 330 ohm resistor. There is a 2.2K pulldown resistor gate to ground. The input power is 1.3A at 9Volts.
The load is a heating element, nichrome wire. I have the V+ from the power supply going directly to the nichrome and then the other end of the nichrome goes to drain of the mosfet.
The mosfet is IRFL014 from vishay, this is suppose to have max ratings of 60V and 2.7 A.
The voltage regulator is 5V 1.5A.
Resistors are 1/8 watt
Seems the mosfet should handle the load but since I am just a tinkerer without EE training I'm not sure where I went wrong. Any help would be greatly appreciated.
The original schematic had S / D reversed I just moved the labels to "fix it"
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